There are 4 easy steps to finding the molar mass of 3K2C2O4*H2O based on its chemical formula. 1. Count The Number of Each Atom. The first step to finding the molar mass is to count the number of each atom present in a single molecule using the chemical formula, 3K2C2O4*H2O: Atoms; K (Potassium) 6:mole-mass calculation. , where we start with a given number of moles of a substance and calculate the mass of another substance involved in the chemical equation, or vice versa. For example, suppose we have the balanced chemical equation: 2Al + 3Cl 2 → 2AlCl 3. Suppose we know we have 123.2 g of Cl 2.Example: calculating molar mass. Let's calculate the molar mass of carbon dioxide (CO 2): Carbon (C) has an atomic mass of about 12.01 amu. Oxygen (O) has an atomic mass of about 16.00 amu. CO 2 has one carbon atom and two oxygen atoms. The molar mass of carbon dioxide is 12.01 + (2 × 16.00) = 44.01 g/mol. Lesson on computing molar mass Molar mass of NaCH3COO*H2O is 100.0491 g/mol. Get control of 2022! Track your food intake, exercise, sleep and meditation for free. Convert between NaCH3COO*H2O weight and moles. Compound.Molar mass (molar weight) is the mass of one mole of a substance and is expressed in g/mol. Mole is a standard scientific unit for measuring large quantities of very small entities such as atoms and molecules. One mole contains exactly 6.022 ×10 23 particles (Avogadro's number) Steps to calculate molar massMass-produced Food - Consistency has become a hallmark of fast food – in each chain, restaurants look alike and meals taste the same. Learn why. Advertisement Consistency has becom...Molecular Formula HO Average mass 18.015 Da Monoisotopic mass 18.010565 Da ChemSpider ID 937 More details: Names Properties Searches Spectra Vendors Articles More Names and Synonyms …15.999. 15.999. Total Mass. 18.015. The molar mass of H2O (Water) is: 18.015 grams/mol. See also our theoretical yield calculator for chemical reactions (probably your next stop to finish the problem set). Feb 17, 2564 BE ... To book a personalized 1-on-1 tutoring session: Janine The Tutor https://janinethetutor.com More proven OneClass Services you might be ...Molar mass (molar weight) is the mass of one mole of a substance and is expressed in g/mol. Mole is a standard scientific unit for measuring large quantities of very small entities such as atoms and molecules. One mole contains exactly 6.022 ×10 23 particles (Avogadro's number) Steps to calculate molar massCompute Mass of Each Element. Multiply the number of atoms by the atomic weight of each element found in steps 1 and 2 to get the mass of each element in NiCl2*6H2O: Molar Mass (g/mol) Ni (Nickel) 1 × 58.6934 = 58.6934. Cl (Chlorine) 2 × 35.453 = 70.906.MgSO4.7H2O molecular weight. Molar mass of MgSO4.7H2O = 246.47456 g/mol. Convert grams MgSO4.7H2O to moles. or. moles MgSO4.7H2O to grams. Molecular weight calculation: 3. Compute Mass of Each Element. Multiply the number of atoms by the atomic weight of each element found in steps 1 and 2 to get the mass of each element in Cu (NO3)2*H2O: Molar Mass (g/mol) Cu (Copper) 1 × 63.546 = 63.546. …Molar Mass, Molecular Weight and Elemental Composition Calculator. Molar mass of (Na2HPO4)7H2O is 1011.7272 g/mol. Get control of 2022! Track your food intake, exercise, sleep and meditation for free. Convert between (Na2HPO4)7H2O weight and …MgSO4.7H2O molecular weight. Molar mass of MgSO4.7H2O = 246.47456 g/mol. Convert grams MgSO4.7H2O to moles. or. moles MgSO4.7H2O to grams. Molecular weight calculation:Water molecule (H2O - Molecular mass), molar mass. Type the number of Water molecule (H2O) you want to convert in the text box, to see the results in the table. CoCl2*6H2O molar mass. Enter a chemical formula to calculate its molar mass and elemental composition: Molar mass of CoCl2*6H2O is 237.9309 g/mol. Get control of 2022! Track your food intake, exercise, sleep and meditation for free. Convert between CoCl2*6H2O weight and moles. Compound. The molar mass of Fe2O3, which is the chemical formula for iron(III) oxide, is 159.68 grams per mole. The molar mass is determined by adding together the atomic weight of each atom...Aug 10, 2022 · Prepare a concept map and use the proper conversion factor. Cancel units and calculate. 3.987molAl × 26.98gAl 1molAl = 107.6gAl. 3.987 mol Al × 26.98 g Al 1 mol Al = 107.6 g Al. Think about your result. The calculated value makes sense because it is almost four times times the mass for 1 mole of aluminum. Mass hysteria epidemics are not as rare as you might think. Learn some super strange mass hysteria at HowStuffWorks. Advertisement For two weeks in 1956, people who lived near Taip...Molar mass (molar weight) is the mass of one mole of a substance and is expressed in g/mol. Mole is a standard scientific unit for measuring large quantities of very small entities such as atoms and molecules. One mole contains exactly 6.022 ×10 23 particles (Avogadro's number) Steps to calculate molar massMolar Mass, Molecular Weight and Elemental Composition Calculator. Molar mass of H2C2O4*2H2O is 126.0654 g/mol. Get control of 2022! Track your food intake, exercise, sleep and meditation for free. Convert between H2C2O4*2H2O weight and …Molar mass (molar weight) is the mass of one mole of a substance and is expressed in g/mol. Mole is a standard scientific unit for measuring large quantities of very small entities such as atoms and molecules. One mole contains exactly 6.022 ×10 23 particles (Avogadro's number) Steps to calculate molar massWater molecule (H2O - Molecular mass), molar mass. Type the number of Water molecule (H2O) you want to convert in the text box, to see the results in the table. Molar mass (molar weight) is the mass of one mole of a substance and is expressed in g/mol. Mole is a standard scientific unit for measuring large quantities of very small entities such as atoms and molecules. One mole contains exactly 6.022 ×10 23 particles (Avogadro's number) Steps to calculate molar massCompute Mass of Each Element. Multiply the number of atoms by the atomic weight of each element found in steps 1 and 2 to get the mass of each element in Na2HPO4 (H2O): Molar Mass (g/mol) Na (Sodium) 2 × 22.98976928 = 45.97953856. H (Hydrogen) 3 × 1.00794 = 3.02382. P (Phosphorus) 1 × 30.973762 = 30.973762. O (Oxygen) 15.9994. 3. Compute Mass of Each Element. Multiply the number of atoms by the atomic weight of each element found in steps 1 and 2 to get the mass of each element in 2H2O: Molar Mass (g/mol) H (Hydrogen) 4 × 1.00794 = 4.03176. Molar mass (molar weight) is the mass of one mole of a substance and is expressed in g/mol. Mole is a standard scientific unit for measuring large quantities of very small entities such as atoms and molecules. One mole contains exactly 6.022 ×10 23 particles (Avogadro's number) Steps to calculate molar massH (Hydrogen) 1.00794. 3. Compute Mass of Each Element. Multiply the number of atoms by the atomic weight of each element found in steps 1 and 2 to get the mass of each element in Co (NO3)2.6 (H2O): Molar Mass (g/mol) Co (Cobalt) 1 × 58.933195 = 58.933195. Calculate the molar mass of CUSO4(H2O)5 in grams per mole or search for a chemical formula or substance. CUSO4(H2O)5 molecular weight Molar mass of CUSO4(H2O)5 = 436.17861 g/molThe molar mass will be equal to: (1 atom x 56 grams/mole Fe) + (2 atoms x 35.5 grams/mole of chlorine) = 127 grams/mole of iron (II) chloride. For other compounds, this might get a little bit more complicated. For example, take the example of zinc nitrate, or Zn (NO 3) 2. In this compound, we have one atom of zinc, two atoms of nitrogen (one ... Step 4: Determine the Number of Oxygen Atoms - There is one oxygen atom in one water molecule. Step 5: Apply the Formula - Molar Mass (H₂O) = (1.008 g/mol × 2) + (16.00 g/mol × 1) Step 6: Calculate - Using the given atomic masses and the number of atoms in one water molecule, the calculated molar mass of H₂O is approximately 18.016 g/mol. NaHCO3 molecular weight. Molar mass of NaHCO3 = 84.00661 g/mol. This compound is also known as Baking Soda or Sodium Bicarbonate. Convert grams NaHCO3 to moles. or. moles NaHCO3 to grams. Molecular weight calculation: 22.98977 …Jul 19, 2564 BE ... Explaining the easiest trick to find the molar mass or molecular mass of water h20 for class 9 -10 and class 11 -12 chemistry in Urdu Hindi.Example: calculating molar mass. Let's calculate the molar mass of carbon dioxide (CO 2): Carbon (C) has an atomic mass of about 12.01 amu. Oxygen (O) has an atomic mass of about 16.00 amu. CO 2 has one carbon atom and two oxygen atoms. The molar mass of carbon dioxide is 12.01 + (2 × 16.00) = 44.01 g/mol. Lesson on computing molar mass Compute Mass of Each Element. Multiply the number of atoms by the atomic weight of each element found in steps 1 and 2 to get the mass of each element in Na2S2O3*H2O: Molar Mass (g/mol) Na (Sodium) 2 × 22.98976928 = 45.97953856. S (Sulphur/Sulfur) 2 × 32.065 = 64.13. O (Oxygen) Molar mass (molar weight) is the mass of one mole of a substance and is expressed in g/mol. Mole is a standard scientific unit for measuring large quantities of very small entities such as atoms and molecules. One mole contains exactly 6.022 ×10 23 particles (Avogadro's number) Steps to calculate molar massCompute Mass of Each Element. Multiply the number of atoms by the atomic weight of each element found in steps 1 and 2 to get the mass of each element in CuCl2*2H2O: Molar Mass (g/mol) Cu (Copper) 1 × 63.546 = 63.546. Cl (Chlorine) 2 × 35.453 = 70.906. H (Hydrogen) 4 × 1.00794 = 4.03176.For example, the molar mass of hydrogen is 1.008 grams per mole, so the mass of a single hydrogen atom is about 1.008 Da or 1.008 amu. Similarly, the mass of a single carbon dioxide molecule is its molar mass expressed as Da or amu. For carbon dioxide, look up the atomic masses of carbon (12.011) and oxygen (15.994) on the …There are 4 easy steps to find the molar mass of Fe(NO3)3.9(H2O) based on its chemical formula. 1. Count The Number of Each Atom. The first step to finding the molar mass is to count the number of each atom present in a single molecule using the chemical formula, Fe(NO3)3.9(H2O): Element Number of Atoms; Fe (Iron) 1:NaHCO3 molecular weight. Molar mass of NaHCO3 = 84.00661 g/mol. This compound is also known as Baking Soda or Sodium Bicarbonate. Convert grams NaHCO3 to moles. or. moles NaHCO3 to grams. Molecular weight calculation: 22.98977 …Go To: Top, Mass spectrum (electron ionization), References Data from NIST Standard Reference Database 69: NIST Chemistry WebBook The National Institute of Standards and Technology (NIST) uses its best efforts to deliver a high quality copy of the Database and to verify that the data contained therein have been selected on the basis of sound ... Molecular mass = the sum of the atomic masses of each atom in the molecule. Therefore, the molecular mass of water, H 2 O, is equal to the sum of the atomic masses of two hydrogen atoms and one oxygen atom, which can be found on the periodic table. Molecular mass H 2 O. = 2 (1.00794) + 15.9994 = 18.0153. Notice that the atomic mass of each ...The molar mass and molecular weight of H20(H2O) is 38.174.It is a conjugate acid of a hydroxide. ChEBI. Water (chemical formula: H2O) is a transparent fluid which forms the world's streams, lakes, oceans and rain, and is the major constituent of the fluids of organisms. As a chemical compound, a water molecule contains one oxygen and two hydrogen atoms that are connected by covalent bonds. We can use the rearranged molarity equation to calculate the moles of NaCl needed for the specified concentration and volume: mol NaCl = [ NaCl] × L of solution = 0.800 mol L × 0.250 L = 0.200 mol NaCl. We can then use the molecular weight of sodium chloride, 58.44 g mol , to convert from moles to grams of NaCl :Molar mass (molar weight) is the mass of one mole of a substance and is expressed in g/mol. Mole is a standard scientific unit for measuring large quantities of very small entities such as atoms and molecules. One mole contains exactly 6.022 ×10 23 particles (Avogadro's number) Steps to calculate molar massIf you want an iPhone, but do not want to spend as much money on a full two-year contract, you can look into services like H2O wireless, that lets you use your unlocked GSM iPhone ...Molar Mass, Molecular Weight and Elemental Composition Calculator. Molar mass of ZnSO4*H2O is 179.4579 g/mol. Get control of 2022! Track your food intake, exercise, sleep and meditation for free. Convert between ZnSO4*H2O weight and moles. Compound.The molar mass is used to convert grams of a substance to moles and is used often in chemistry. The molar mass of an element is found on the periodic table, …Molar mass (molar weight) is the mass of one mole of a substance and is expressed in g/mol. Mole is a standard scientific unit for measuring large quantities of very small entities such as atoms and molecules. One mole contains exactly 6.022 ×10 23 particles (Avogadro's number) Steps to calculate molar massHow to Convert Mass to Mole. In chemistry, the molar mass of a chemical compound is defined as the mass of 1 mole (or 6.02214×10 23 particles) of the substance, expressed in grams.. The mole (the unit of measurement for amount of substance) is defined in such a way that the molar mass of a compound, in g/mol, is numerically equal to the average …Step 1: Calculate the molar mass of water. We know that molar mass of 1 mole of Hydrogen is 1 g mol - 1. and, molar mass of 1 mole of Oxygen is 16 g mol - 1. We know that the chemical formula of water is H 2 O. ∴ molar mass of water is. H 2 O = 2 × 1 + 16 = 2 + 16 18 g mol - 1. Therefore, molar mass of water is 18 g mol - 1. Suggest Corrections.The molar amount of a substance may be calculated by dividing its mass (g) by its molar mass (g/mol): The factor-label method supports this mathematical approach since the unit “g” cancels and the answer has units of “mol:”. 4.7 g K ⎛⎝ mol K 39.10 g K ⎞⎠ = 0.12mol K 4.7 g K ( mol K 39.10 g K) = 0.12 mol K. Chemists generally use the mole as the unit for the number of atoms or molecules of a material. One mole (abbreviated mol) is equal to 6.022×10 23 molecular entities (Avogadro’s number), and each element has a different molar mass depending on the weight of 6.022×10 23 of its atoms (1 mole). The molar mass is the mass of a mole of a substance, which corresponds to the quantity of matter that contains an Avogadro's number of atoms or molecules (depending on the substance). Molar masses change widely in the periodic table: a mole of hydrogen weighs only 1.008 g, while a mole of uranium weighs 238.03 g.How many moles of H 2 O are present in 240.0 g of water (about the mass of a cup of water)? Solution. Use the molar mass of H 2 O as a conversion factor from mass to moles. The molar mass of water is (1.0079 + 1.0079 + 15.999) = 18.015 g/mol. Molar mass (molar weight) is the mass of one mole of a substance and is expressed in g/mol. Mole is a standard scientific unit for measuring large quantities of very small entities such as atoms and molecules. One mole contains exactly 6.022 ×10 23 particles (Avogadro's number) Steps to calculate molar massCaC2O4 molecular weight. Molar mass of CaC2O4 = 128.097 g/mol. This compound is also known as Calcium Oxalate. Convert grams CaC2O4 to moles. or. moles CaC2O4 to grams. Molecular weight calculation: 40.078 + 12.0107*2 + 15.9994*4.Molar mass: 18.01528(33) g/mol Appearance Almost colorless or white crystalline solid, almost colorless liquid, with a hint of blue, colorless gas: Odor: Odorless Density If you follow these simple steps, you could survive a mass shooting. But you probably won't. According to the nonprofit agency the Gun Violence Archive, there have been over 200 ma...The molecular formula of water is H(2)O Atomic mass of H = 1 Atomic mass of O = 16. therefore molecular mass of water = (2 xx atomic mass of H ) + (1 xx ...Molar mass is the amount of mass in one mole of a substance. A mole is used in chemistry as a counting unit indicating the amount of ions, atoms, molecules or formula units in a sp...Example: calculating molar mass. Let's calculate the molar mass of carbon dioxide (CO 2): Carbon (C) has an atomic mass of about 12.01 amu. Oxygen (O) has an atomic mass of about 16.00 amu. CO 2 has one carbon atom and two oxygen atoms. The molar mass of carbon dioxide is 12.01 + (2 × 16.00) = 44.01 g/mol. Lesson on computing molar mass Mass hysteria epidemics are not as rare as you might think. Learn some super strange mass hysteria at HowStuffWorks. Advertisement For two weeks in 1956, people who lived near Taip...Calculate the molar mass of CUSO4(H2O)5 in grams per mole or search for a chemical formula or substance. CUSO4(H2O)5 molecular weight Molar mass of CUSO4(H2O)5 = 436.17861 g/molMolar mass (molar weight) is the mass of one mole of a substance and is expressed in g/mol. Mole is a standard scientific unit for measuring large quantities of very small entities such as atoms and molecules. One mole contains exactly 6.022 ×10 23 particles (Avogadro's number) Steps to calculate molar massCompute Mass of Each Element. Multiply the number of atoms by the atomic weight of each element found in steps 1 and 2 to get the mass of each element in CaCO3*H2O: Molar Mass (g/mol) Ca (Calcium) 1 × 40.078 = 40.078. C (Carbon) 1 × 12.0107 = 12.0107. O (Oxygen) 4 × 15.9994 = 63.9976.Molar Mass, Molecular Weight and Elemental Composition Calculator. Molar mass of CaC2O4*H2O is 146.1123 g/mol. Get control of 2022! Track your food intake, exercise, sleep and meditation for free. Convert between CaC2O4*H2O weight and moles. Compound.Molar mass (molar weight) is the mass of one mole of a substance and is expressed in g/mol. Mole is a standard scientific unit for measuring large quantities of very small entities such as atoms and molecules. One mole contains exactly 6.022 ×10 23 particles (Avogadro's number) Steps to calculate molar massIf you want an iPhone, but do not want to spend as much money on a full two-year contract, you can look into services like H2O wireless, that lets you use your unlocked GSM iPhone ...Molar Mass, Molecular Weight and Elemental Composition Calculator. Molar mass of CaC2O4*H2O is 146.1123 g/mol. Get control of 2022! Track your food intake, exercise, sleep and meditation for free. Convert between CaC2O4*H2O weight and moles. Compound. 3. Compute Mass of Each Element. Multiply the number of atoms by the atomic weight of each element found in steps 1 and 2 to get the mass of each element in Sr (IO3)2*H2O: Molar Mass (g/mol) Sr (Strontium) 1 × 87.62 = 87.62. I …Compute Mass of Each Element. Multiply the number of atoms by the atomic weight of each element found in steps 1 and 2 to get the mass of each element in Na2S2O3*5H2O: Molar Mass (g/mol) Na (Sodium) 2 × 22.98976928 = 45.97953856. S (Sulphur/Sulfur) 2 × …Dec 31, 2564 BE ... Calculate the molecular or formula mass of each of the following: H2O OpenStax™ is a registered trademark, which was not involved in the ...Molar mass of NaH2PO4*H2O is 137.9923 g/mol. Get control of 2022! Track your food intake, exercise, sleep and meditation for free. Convert between NaH2PO4*H2O weight and moles. Compound.Molar mass of H2O = 18.01528 g/mol This compound is also known as Water or Dihydrogen Monoxide. Convert grams H2O to moles or moles H2O to grams Molecular …Compute Mass of Each Element. Multiply the number of atoms by the atomic weight of each element found in steps 1 and 2 to get the mass of each element in CuCl2*2H2O: Molar Mass (g/mol) Cu (Copper) 1 × 63.546 = 63.546. Cl (Chlorine) 2 × 35.453 = 70.906. H (Hydrogen) 4 × 1.00794 = 4.03176.Molar mass (molar weight) is the mass of one mole of a substance and is expressed in g/mol. Mole is a standard scientific unit for measuring large quantities of very small entities such as atoms and molecules. One mole contains exactly 6.022 ×10 23 particles (Avogadro's number) Steps to calculate molar massChemists generally use the mole as the unit for the number of atoms or molecules of a material. One mole (abbreviated mol) is equal to 6.022×10 23 molecular entities (Avogadro’s number), and each element has a different molar mass depending on the weight of 6.022×10 23 of its atoms (1 mole).
1.00794. 3. Compute Mass of Each Element. Multiply the number of atoms by the atomic weight of each element found in steps 1 and 2 to get the mass of each element in CaC2O4*H2O: Molar Mass (g/mol) Ca (Calcium) 1 × 40.078 = 40.078. C (Carbon) 2 × 12.0107 = 24.0214.. Billy clapp lake
A sample of a chromium compound has a molar mass of 151.99 g/mol. Elemental analysis of the compound shows that it contains 68.43% chromium and 31.57% oxygen. What is the identity of the compound? ... Mole of H2O: 0.028 mol H 2 O. Mole of N2: 0.004 mol N 2. 21. How many moles of CO 2, H 2 O, and N 2 will be produced by combustion analysis of 0. ...Molar Mass, Molecular Weight and Elemental Composition Calculator. Molar mass of ZnSO4*H2O is 179.4579 g/mol. Get control of 2022! Track your food intake, exercise, sleep and meditation for free. Convert between ZnSO4*H2O weight and moles. Compound.15.999. 15.999. Total Mass. 18.015. The molar mass of H2O (Water) is: 18.015 grams/mol. See also our theoretical yield calculator for chemical reactions (probably your next stop to finish the problem set). Molar mass (molar weight) is the mass of one mole of a substance and is expressed in g/mol. Mole is a standard scientific unit for measuring large quantities of very small entities such as atoms and molecules. One mole contains exactly 6.022 ×10 23 particles (Avogadro's number) Steps to calculate molar massNaH2PO4 molecular weight. Molar mass of NaH2PO4 = 119.977011 g/mol. This compound is also known as Monosodium Phosphate. Convert grams NaH2PO4 to moles. or. moles NaH2PO4 to grams. Molecular weight calculation: 22.98977 + …Molar mass (molar weight) is the mass of one mole of a substance and is expressed in g/mol. Mole is a standard scientific unit for measuring large quantities of very small entities such as atoms and molecules. One mole contains exactly 6.022 ×10 23 particles (Avogadro's number) Steps to calculate molar massDec 5, 2023 · For example, the molar mass of H2 is 1.007 x 2 x 1 g/mol, or 2.014 g/mol. Finding the molar mass of a compound is a little more complicated. First, you’ll need to find the chemical formula for the compound. For example, if you’re calculating the molar mass of water, you’d start with the formula H2O. Figure 3.6.2 3.6. 2: The average mass of an aspirin molecule is 180.15 amu. The model shows the molecular structure of aspirin, C 9 H 8 O 4. Ibuprofen, C 13 H 18 O 2, is a covalent compound and the active ingredient in several popular nonprescription pain medications, such as Advil and Motrin.Molar mass (molar weight) is the mass of one mole of a substance and is expressed in g/mol. Mole is a standard scientific unit for measuring large quantities of very small entities such as atoms and molecules. One mole contains exactly 6.022 ×10 23 particles (Avogadro's number) Steps to calculate molar massThere are 4 easy steps to find the molar mass of H2 based on its chemical formula. 1. Count The Number of Each Atom. The first step to finding the molar mass of Dihydrogen …Figure 3.6.2 3.6. 2: The average mass of an aspirin molecule is 180.15 amu. The model shows the molecular structure of aspirin, C 9 H 8 O 4. Ibuprofen, C 13 H 18 O 2, is a covalent compound and the active ingredient in several popular nonprescription pain medications, such as Advil and Motrin. Jul 19, 2564 BE ... Explaining the easiest trick to find the molar mass or molecular mass of water h20 for class 9 -10 and class 11 -12 chemistry in Urdu Hindi.sum of the atomic masses(listed in the periodic table) of the elements in a substance's formula. For example the molar mass of Ne = 20 g/mole. H2O = [2 *1. + 1( ...Jan 2, 2565 BE ... You can calculate the % by mass of H2O in a hydrate by: * Calculating the molar mass of the entire compound (including water) * Dividing the ...Compute Mass of Each Element. Multiply the number of atoms by the atomic weight of each element found in steps 1 and 2 to get the mass of each element in CuSO4 (5H2O): Molar Mass (g/mol) Cu (Copper) 1 × 63.546 = 63.546. S (Sulphur/Sulfur) 1 × 32.065 = 32.065. O (Oxygen) 9 × 15.9994 = 143.9946.Jan 18, 2024 · Find the molar masses of carbon (C), hydrogen (H), and oxygen (O). Count the number of atoms of each element in the compound. Find the molar mass of glucose by multiplying the atomic masses of the atoms and their number, then find the sum: μ = 6 × 12.01 g/mol + 12 × 1.0079 g/mol + 6 × 16 g/mol = 180.1548 g/mol. So, one mole of water (6.022 x 10 23 molecules) has a mass of 18.02 g. • Molar ... moles of HgS it produces to mass using the molar mass of HgS. 60. Solution ....